Analysis on the Time and Frequency Domains of the Acceleration in Front Crawl Stroke
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The swimming involves accelerations and decelerations in the swimmer's body. Thus, the main objective of this study is to make a temporal and frequency analysis of the acceleration in front crawl swimming, regarding the gender and the performance. The sample was composed by 31 male swimmers (15 of high-level and 16 of low-level) and 20 female swimmers (11 of high-level and 9 of low-level). The acceleration was registered from the third complete cycle during eight seconds in a 25 meters maximum velocity test. A position transducer (200Hz) was used to collect the data, and it was synchronized to an aquatic camera (25Hz). The acceleration in the temporal (root mean square, minimum and maximum of the acceleration) and frequency (power peak, power peak frequency and spectral area) domains was calculated with Fourier analysis, as well as the velocity and the spectrums distribution in function to present one or more main peaks (type 1 and type 2). A one-way ANOVA was used to establish differences between gender and performance. Results show differences between genders in all the temporal domain variables (p<0.05) and only the Spectral Area (SA) in the frequency domain (p<0.05). Between gender and performance, only the Root Mean Square (RMS) showed differences in the performance of the male swimmers (p<0.05) and in the higher level swimmers, the Maximum (Max) and the Power Peak (PP) of the acceleration showed differences between both genders (p<0.05). These results confirms the importance of knowing the RMS to determine the efficiency of the swimmers regarding gender and performance level
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- Buchner, M, and Reischle, K. (2003). Measurements of the intracyclical acceleration in competitive swimming with a newly developed accelometer-goniometer-device. In J Chatard (Ed.), Biomechanics and Medicine in Swimming IX (pp. 57-62). St. Etienne, FRA.
- Caty, V, Aujouannet, Y, Hintzy, F, Bonifazi, M, Clarys, JP, and Rouard, AH. (2007). Wrist stabilisation and forearm muscle coactivation during freestyle swimming. Journal of Electromyography and Kinesiology, 17(3), 285-291.[WoS][Crossref]
- Chollet, D. (2004). Natación deportiva (2nd ed.). Barcelona: Inde.
- Chollet, D, Chalies, S, and Chatard, JC. (2000). A new index of coordination for the crawl: description and usefulness. International Journal of Sports Medicine, 21(1), 54-59.[Crossref]
- Costill, DL, Maglischo, EW, and Richardson, AB. (1992). Swimming (4th ed.). Bodmin, UK: Blackwell Science Ltd.
- Counsilman, JE. (1968). The science of swimming (2nd ed.). Englewood Cliffs, USA: Prentice-Hall.
- Counsilman, J. E. (1983). La Natación: Ciencia y Técnica para la preparación de campeones (E Alonso Trans.). (3rd ed.). Barcelona: Edit. Científico Técnica.
- Counsilman, JE, and Wasilak, J. (1982). The importance of hand speed and hand acceleration. In RM Ousley (Ed.), 1981 ASCA World Clinic Yearbook (pp. 41-55). Fort Lauderdale, USA: American Swimming Coaches Association.
- Holmér, I. (1979). Analysis of acceleration as a measure of swimming proficiency. In J Terauds and EW Bedingfield (Eds.), Swimming III (pp. 118-124). Baltimore, USA.
- Madera, J, González, LM, García Massó, X, Benavent, J, Colado, JC, and Tella, V. (2010). Different frequential acceleration spectrums in front crawl. In PL Kjendlie, RK Stallman and J Cabri (Eds.), XI International Symposium for Biomechanics and Medicine in Swimming (pp. 119-122). Oslo, NOR.
- Maglischo, EW. (1982). Swimming faster: a comprehensive guide to the science of swimming. Mountain View, USA: Mayfield.
- Maglischo, EW. (1993). Swimming even faster (2nd ed.). Mountain View, USA: Mayfield Pub. Co.
- Maglischo, EW. (2003). Swimming fastest (5th ed.). Champaign, USA: Human Kinetics Publishers.
- Mason, BR, Tong, Z, and Richards, R. (1992). Propulsion in the butterfly stroke. In DP MacLaren, T Reilly and A Lees (Eds.), Biomechanics and Medicine in Swimming, Swimming Science VI (pp. 81-86). London, UK.
- Morouço, P, Lima, AB, Semblano, P, Fernandes, D, Gonçalves, P, Sousa, F, Fernandes, R, Barbosa, TM, Correia, MV, Vilas-Boas, JP. (2006). Validation of a cable speedometer for butterfly evaluation. Revista Portuguesa De Ciěncias do Desporto, 6(2), 236-239.
- Pollock, DSG. (1999). A handbook of time-series analysis, signal processing and dynamics (1st ed.). London, UK: Academic Press.
- Slawson, SE, Justham, LM, West, AA, Conway, PP, Caine, MP, and Harrison, R. (2008). Accelerometer profile recognition of swimming strokes. The Engineering of Sport 7, (pp. 81-87).
- Tella, V, Madera, J, Colado, JC, Mateu, J, García Massó, X, and González, LM. (2010). A study about the 3D acceleration in front crawl and its relation with performance. In PL Kjendlie, RK Stallman and J Cabri (Eds.), XI International Symposium for Biomechanics and Medicine in Swimming (pp. 173-174). Oslo, NOR.
- Tella, V, Toca-Herrera, JL, Gallach, JE, Benavent, J, González, LM, and Arellano, R. (2008). Effect of fatigue on the intra-cycle acceleration in front crawl swimming: A time-frequency analysis. Journal of Biomechanics, 41(1), (pp. 86-92).[WoS][Crossref]
- Ungerechts, BE. (1988). The relation of peak body acceleration to phases of movements in swimming. In BE Ungerechts, J Wilke and K Reischle (Eds.), Swimming Science V (pp. 61-66). Champaign, USA.
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